Portable saw



April 14, 1925.

V. DAVIS PORTABLE SAW Filed June 4. 1 924 ATTORNEY 5 s E N W un PatentedApia 14- 1925 VERNON DAVIS, E FRANKLINVILLE, NEKV YORK.

PORTABLE SAW.

" 7 Application filed June 4:,

To all whom it may] concern: 7

Be it known that I VERNON DAVIS, a citi zen of the United States,residing at Franklinville, in the county of Cattaraugus and State of NewYork, have invented new and useful Improvements in Portable Saws, ofwhich the following is a specification.

My invention relates to portable saws and its principal object is toprovide a saw which will be carried by the operator in such a manner asto permit him to stand upon a high perch such as a tree and sever thelimbs therefrom.

A further object of the invention is. to provide a portable saw which isextremely compact, consistsof few parts and can be manufactured and soldat a minimum cost.

Still another object of the invention is to 7 provide a portable sawwhich may be read ily attached to the body of the operator and supportedin such a manner as to permit him-to have use of both hands in theoperation of the device.

With the preceding and other objects and advantages in mind, theinvention consists in the novel combination of elements, con structionand arrangement of parts and operation to be hereinafter specificallyreferred to. claimed and illustrated in the accompanying drawings.wherein Figure 1 is a side elevation of a portable saw constructed inaccordance with my in vention;

Figure 2 is an elevation taken at right angles to Figure 1;

Figure 3 is a fragmentary detail sectional view of the device. and

Figure 4 is a similar view showing the clutch embodied in the invention.

Referring to the drawing in detail wherein the corresponding charactersof reference designate corresponding parts throughout the several views,the numeral, 5 designates a substantially vertical rectangular frameprovided with bearings .6 in its upper end in which a horizontallyarranged shaft 7 is journaled. As shown in Figure 1. this frame includesa plurality of parallel cross bars 8 andextending therethrough andsupported thereby is avertically arranged tubular casing 9 carrying asubstantially rectangular gear housing 10 at its upper end through theside walls of which the shaft 6 extends. A shaft 11 extendslongitudinally within the casing 9 and is retained in a central positiontherein by bearings 12 arranged 1924-. Serial 1%. 717,848.

in this casing 9. A flexible drive shaft 13 is connected with the lowerend of the shaft 11 and is adapted to be driven from any suitable sourceof power not shown. A pinion 14- is carried-bythe upper end of the shaft11 and is arranged within the gear housing the frame 5 and extends'at anangle from the same and engagesohe end of the shaft 6. A brace 19extendsfroin the opposite side of the frame 5 at a point inhorizontalalinement with the brace 18 and carries a saw guard 20. Thisbrace 19 is connected. to the saw guard 20 intermediate its ends and isthen extended upwardly and engaged with .the adjacent end of the shaft6. The lower end of the brace 19 terminates in a laterally and extendingarm 21 which supports a substantially vertical tree branch guide 22. thelatter including a pair of divergent resilient arms 23 which areadjustable toward and away from each other by means of a threaded boltand wing nut indicated at 24 and 25 respectively.

A plurality of longitudinally bowed straps 26are carried by the frame 5,while a similar strap 27 is carried by the brace 18. A body encirclingflexible strap 28 is provided and carries snap books 29 engageable inany pair of these straps 26 whereby to support the frame and partscarried thereby 011 the operator in a convenient manner.

The tubular housing 9 is formed with a circular casing 29 which is of adiameter greater than the diameter of the tubular housing 9 and isprovided with slots 30 at diametrically opposite points. A pair ofclutch elements are arranged within the housing 29, the fixed one ofwhich being designated at 31 while the slidable clutch element isdesignated at 32 and is slidable upon a rectangular part 33 of the shaft11( Pintles 34 extend from the movable clutch element 32 and atdiametrically opposite points and pass through the slots 30., A slightlyresilient lever is designated at 35 and carries a U-shaped yoke 36 whichis distributed as at 37 and has its ends loosely engaged with thepintles 34. The frame 5 is formed with an outstanding shoulder 38against which the lever is normally held by means of a contractilespring 59 which is attachet. to this lever and the adjacent cross bar 8.3

Normally the lever 35 is engaged beneath the shoulder 38 and holds themovable clutch element in an elevated position as shownin Figure 5.However, when it is desired to drive the rotary saw 16, the lever 35will be swung outwardly frointhe shoulder 38 and'the coil spring willmove this lever upwardly rocking it on its pivot 37 and consequentlyshifting the movable clutch element32 into operative engagement with thefixed clutch element 31.

Vi hile/ l have shown and described the preferred embodin'ient of theinventiomit is to be understood that changes may be made in thearrangenientof parts, and t ia't .i am only limited by the appendedclaims.

hat is claimed is 1. In a portable saw, a frame, means for supportingthe same from the person, a shaft jo-urnaled in the frame, a bar carriedthereby, a tubular casing extending longitudinally of the. frame, driveshaft arranged therein, and adapted to be connected with. a source ofpower, clutch elements ar ranged within the tubular easing, one of whichbeing fixed to the shaft and the other being slidablethereon, a leverpivoted tov the tubular casing and having operative connection with theslidahle clutch element, and means for locking the lever in a positionto retain the movable-clutch element in inoperative position.

2. In a portable saw, a frame, means for supporting the same from theperson, a shaft ournaled 1n the frame, a bar carried thereby, a tubularcasing extending longitudinally ofthe frame, a drive shaft arrangedtherein, and adapted to beconnectcd with a-source of power, clutchelements arranged within the tubular casing, one of which be ing fixedto-theshaft and the other being slidable thereon, a lever pivoted to thetubular casing and having operative connection Withthe slidable clutchelement, means for looking the lever in a position to retain the movableclutch element in inoperative position, and a substantially U-shapedtree limb receiving guide supported by "the frame and eXtenclin-gparallel to the plane of ro-.-

tation of the saw.

In a portable saw, aframe, means for supporting the same from theperson, a shaft journaled in the frame, abar carnied there y, a *tubulareasing extending 'longitudinally of the frame, a drive shaft arrangedtherein, and adapted to be'con-nected with a source of power,clutchelemonts arranged within the tubular casing, .one of which beingfixed to the shaftand lillQrOBllGl' being slidablethereon, a leverpivoted tothe tubular casing and having operative scon nection with theshdable clutch element,

